Great to hear you found a solution jabberwock
I haven't really used Google Drive for cloud storage, still using it like the Google Docs it used to be.
Seeing as you have quite the large collection it might be worthwhile to back it up on multiple cloud storage services. My Dropbox and Google Drive are both backed up on my Ubuntu One, simply by placing those two folders inside the Ubuntu One folder.
And all of these services have APIs allowing plugins to be made easily, maybe soon someone will make a plugin for some of the common software readers, doing just what you wanted
